Carbureter.



R. HUFF.

CARBURETER.

APPLICATION FILED JULY 16. 1912.

Patented Apr. 3, 191?.

RUSSELL RUFF, OF DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR CAR COM-PANY, 011' DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

CARIBURETER.

Specification of Letters Iatent.

Patented Apr. 3, 1917.

Uriginal application filed August 29, 1907, Serial No. 390,652. Dividedand this application filed. July 16,

- 1912. Serial No. 709,747. 7

To all whom it may concern:

Be it known that I, RUSSELL HUFF, a citizen of the United States, andresident of Detroit, Wayne county, State of Michiing drawing, in which-Figure l is a vertical section through a carbureter embodying theinvention;

Fig. 2 is a section taken at right angles to the section of Fig. 1andembodying a slight modification;

Fig. .3 is a plan view partly in section on the line 22 of Fig. 1, and

Fig. 4 is a section on the line 44 of Fig. 1.

- Referring to the drawing, 1 indicates the gasolene filter well and 2the float chamber. These parts are of ordinary construction and need notbe described in detail. It will be understood that the gasolene passesfrom the float chamber directly into the nozzle 3, and that it is drawnfrom the nozzle periodically by the suction created in the cylinders bythe working of the pistons therein.

Referring to the drawing, 4 indicates the primary air intake (shown moreclearly in Patent 1,095,326) which is open at its outer end to theatmosphere and communicates at its inner end with a chamber 5surrounding the gasolene nozzle 3. From the chamber 5, a tube 6,concentric with the nozzle and surrounding the same leads upward intothe mixing chamber 7. The upper portion of the tube 6 is flaredoutwardly preferably above the outlet of the nozzle 3. It will beunderstood that at each cycle of operations of the engine the gasoleneis drawn from jacket of the engine cylinder and conducted into thewater-jacket .8 through the inlet 9. After passing through thewater-jacket the water is conducted diametrically across the mixingchamber in the'tube 10 to an outlet 11. As shown, the tube 10 is formedwith an enlargement 12 having a downwardly depending corrugated surfacedirectly over the gasolene nozzle 3. This provides an enlarged heatedsurface against which the mixture of gasolene and air is projected,which greatly facilitates the vaporizing of the gasolene and increasesthe eiiiciency of the carbureter. The mixture is conducted from theupper end of the mixing chamber through suitable conduits to thecylinder or cylinders of the engine.

In Fig. 2, the outlet from the waterjacket 8 is through a tube 10extending ;-diametrically across the mixing chamber directly over thegasolene nozzle. This tube 10 is preferably threaded to increase itssurface and the gasolene is sprayed toward it. The tube thus acts as apanel to intersect any unvaporized gasolene and hold it in a current ofair, and it also serves to vaporize the gasolene, due to its heatedstate.-

Within the mixing chamber is'a throttle valve 13 which is adapted tocompletely close the direct passage through the mixing cham-- passing tothe motor which will permit the motor to idle or run at a minimum speed.

In the present instance I provide a by-- pass which is formed in thewalls of the mixing chamber and which is accessible from the outside ofthe carbureter and adjustable to vary the minimum supply of mixture.

' 14, 15 indicate two bores or passages which intersect and which extendentirely through the wall of the mixing chamber and through solid metalextending across the watenjacket. One of these tubes is closed at theoutside by a plug 16 while the other is closed by an adjustable valve17, the said valve being adapted to close the by-pass 14, 15, or toleave same open to any desired degree. The valve 17 is provided with alock nut 18 for holding the valve in any desired adjustment. lit will beobvious that the by-pass can be adjusted with ease from the outside andalso that it can be readily cleaned by removing the plug 16 and thevalve 17.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

1. In a carbureter for hydrocarbon engines, the combination of a mixingchamber having a hot water tube extending thereacross and formedintegral with the walls of the chamber, a throttle valve arranged insaid chamber and adapted to control the flow of mixture therethrough,and a by-pass formed in the wall of said chamber and providing arestricted passage for mixture when the throttle va'lveisclosed.

2. In a carbureter for hydrocarbon engines, the combination with amixingchamber, of a valve therein, and a by-pass around said valve, saidby-pass comprising two; intersecting passages through the wall of themixing chamber, one of said passages being provided with a removableplug and the other being provided with a removable and adjustable valve,whereby the by-pass may be controlled and readily cleaned.

3. In a carbureter for hydrocarbon engines the combination with themixing chamber of a gasolene nozzle discharging therein, an air intakefor said chamber, a water-jacket for said chamber, a valve adapted toclose the passage through said chamber, and a bypass around sa1d valvecomprising two intersecting passages extending through from the interiorof the mixing chamber to the exterior of the waterjacket, a removableplug in one of said passages, and an adjustable and removable valve inthe other opening, for the purpose set forth.

4. A carbureter for hydrocarbon engines comprising a mixing chamber anda throttle valve therein, the walls of said chamber having intersectingopenings affording a bypass around said throttle valve.

5. A carburetor for hydrocarbon engines comprising a mixing chamber anda throttle valve therein, the walls of said chamber having intersectingopenings affording a bypass around said throttle valve, and removableclosing means in the outer ends of said openings whereby the openingsmay be reached for cleaning.

6. In a carbureter for hydrocarbon motors, the combination with a mixingchamber comprising double cylindrical walls forming a water-jacketaround the chamber, inlet and outlet .pipes for said water-jacket, athrottle valve in said chamber, a metal filling between said wallsadjacent said throttle valve, said metal filling having a by-pass formedtherein around said valve.

In testimony whereof I aflix my signature in the presence of twowitnesses.

. RUSSELL HUFF.

Witnesses:

Ln R01 S. WILLIAMS, A. J. NEERKEN.

